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Harm Riksen

harmriksen
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24 followers
·
36 following

Paleozoic era (541 - 252Ma)

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65 Pins
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1y

History maps

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224 Pins
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1 section
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2y

Science

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1 Pin
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2y

Neogene Period (23 - 2.58Ma)

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3 Pins
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3y

Quaternary Period (2.58 Ma - Present)

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83 Pins
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3y

Beeldende Kunst

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9 Pins
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4mo

Mesozoic Era (250-66 MY BP)

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340 Pins
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4y

Cenozoic Period (66–0 Ma)

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19 Pins
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4y

Celtic knotwork

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8 Pins
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4y

Schoolplaten

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11 Pins
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5y